scholarly journals Injection molding and mechanical properties evaluation of short jute fiber polypropylene reinforced composites

2010 ◽  
Author(s):  
F. A. Mirza ◽  
S. M. Rasel ◽  
A. M. Afsar ◽  
B. S. Kim ◽  
J. I. Song
Keyword(s):  
Mechanical Properties ◽  
Injection Molding ◽  
Jute Fiber ◽  
Reinforced Composites

Mechanical Properties of Jute/PLA Injection Molded Products-All Natural Composites

2011 ◽  
Author(s):  
Masuo Murakami ◽  
Yuqiu Yang ◽  
Hiroyuki Hamada
Keyword(s):  
Mechanical Properties ◽  
Injection Molding ◽  
Density Measurement ◽  
The Other ◽  
Jute Fiber ◽  
Poly Lactic Acid ◽  
Thermoplastic Polymer ◽  
Environmental Friendly ◽  
Molding Condition ◽  
Natural Composites

Natural composites have been important materials system due to preservation of earth environments. Natural fibers such as jute, hemp, bagasse and so on are very good candidate of natural composites as reinforcements. On the other hand regarding matrix parts thermosetting polymer and thermoplastic polymer deriver form petrochemical products are not environmental friendly material, even if thermoplastic polymer can be recycled. In order to create fully environmental friendly material (FEFM) biodegradable polymer which can be deriver from natural resources is needed. Therefore poly(lactic acid) (PLA) polymer is very good material for the FEFM. However, PLA is very brittle polymer, so that polymer chemists have been made the efforts to make tough PLA. In this paper Jute/PLA composites was fabricated by injection moldings and mechanical properties were measured. It is believable that industries will have much attention to FEFM, so that injection molding was adopted to fabricate the composites. Long fiber pellet pultrusion technique was adopted to prepare jute fiber-PLA pellet (Jute/PLA). Because it is a new method which is able to fabricate composite pellets with relative long length fibers for injection molding process, where, jute yarns were continuously pulled and coated with PLA resin. Here two kinds of PLA materials were used including the one with mold releasing agent and the other is without it. After pass through a heated die whereby PLA resin impregnates into the jute yarns and sufficient cooling, the impregnated jute yarns were cut into pellets. Then Jute/PLA pellets were fed into injection machine to make dumbbell shape specimens. In current study, the effects of temperature of heat die i.e. impregnation temperature and the kind of PLA were focused to get optimum molding condition. The volume fractions of jute fiber in pellet were measured by several measuring method including image analyzing, density measurement and dissolution methods. And the mechanical property were investigated by tensile and Izod testing. It is found that 250 degree is much suitable for Jute/PLA long fiber pultrusion process. Additionally the jute fibers seem much effective to increase the tensile modulus and the Izod strength. That is to say, the addition of Jute fiber in PLA, the brittle property can be improved.

Study on the Mechanical Properties of Jute/Carbon Hybrid Composites

2011 ◽  
Vol 331 ◽  
pp. 110-114 ◽  
Author(s):  
Jian Ming Wang ◽  
Lei Zhao ◽  
Xiao Qin
Keyword(s):  
Mechanical Properties ◽  
Carbon Fibers ◽  
Hybrid Composites ◽  
Engineering Application ◽  
Tensile Modulus ◽  
Jute Fiber ◽  
Resin Composites ◽  
Reinforced Composites ◽  
Fiber Volume ◽  
Math Model

Carbon fibers were used to lay lengthways into three lays in jute fiber needled mat and the same fiber volume content of jute fiber needled mat were fabricated. Those two mats and the lengthways carbon fibers reinforced vinyl resin composites were made by VARTM. We made a comparison of the hybrid reinforced composites between the test value and the theoretical value which was predicted by establishing tensile and bending math-model and their mechanical properties were analyzed. The results show that there was a certain line between the theoretical value and the test value of the hybrid composites, so we can establish the mixing ratio between jute fiber and carbon fiber during the engineering application. Although the use of carbon fibers had greatly enhanced the tensile properties of hybrid composite, whose tensile strength and tensile modulus increased by 85.94% and 30.99% respectively than that without carbons, the bending model can’t be changed a lot.

Effect of Epoxy Resin Concentration on Some Mechanical Properties of Carbon Fabric/ Nitrile Rubber Reinforced Composites

2019 ◽  
Vol 9 (1) ◽  
pp. 1-15
Author(s):  
Sawsan Fakhry Halim ◽  
Said Sayed Gad El Kholy ◽  
HalaFikry Naguib ◽  
Riham Samir Hegazy ◽  
Nermen Mohamed Baheg
Keyword(s):  
Mechanical Properties ◽  
Epoxy Resin ◽  
Nitrile Rubber ◽  
Reinforced Composites ◽  
Carbon Fabric
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